10-15 Superficial Face Flashcards
A: What are the 4 main muscles of Mastication (AKA____)
B: Which nerve innervates these muscles?
A: ºMastication (AKA Chewing)
- masseter m.
- temporalis m.
- lateral pterygoid m.
- medial pterygoid m.
B: MANDIBULAR n. ([Trigeminal/CN5-B3)
CN5 {_____ nerve} has 3 branches. Name the granddaughter branches of the FIRST 2 branches
CN5{TRIGEMINAL NERVE}
CN5-B1 = Nasociliary/ Frontal / Lacrimal n.
CN5-B2 =infraorbital / Zygomatic
Which nerve innervates Facial Expression Muscles? What are its branches?
Facial CN7 innervates Facial expression muscles! "That Zombie Bit My Cat" 1-Temporal n. 2-Zygomatic n. 3- Buccal n. 4-Mandibular n. 5-Cervical n.
[CN5B3= Mandibular n.] has 3 Divisions
Name the 4 nerves of the UnDivided Trunk Division
[CN5B3/mandibular n.]
- meningeal n.
- n. —>medial pterygoid
- n.—->tensor tympani m.
- n. —–>tensor veli palatini m.
[CN5B3= Mandibular n.] has 3 Divisions
Name the 4 nerves of the ANTERIOR/___ Division
ANTERIOR Division = Muscular MOTOR [except buccal]
- Buccal n.= Sensory but in MOTOR division
- BOTH Deep temporal n.
- lateral pterygoid n.
- Masseter n.
[CN5B3 = Mandibular n.] has 3 Divisions
Name the 3 nerves of the POSTERIOR/_____ Division
CN5B3/mandibular n.
POSTERIOR Division = sensory Division :-)
- auriculotemporal n.
- lingual n.
- inferior alveolar n. (creates mylohyoid n. 1st)—[but still continues as IA]—>mental n. when it exits
- *PAROTID GLAND**
1) Describe its nerve innervation
2) Where are its Preganglionic fibers located?
3) Where are its POSTganglionic cell bodies located?
4) Which nerve transmits this glands postganglionic fibers to it?
1) Parasympathetic from CN9
2) Preganglionic fibers in lesser petrosal n.
3) Postganglionic cell bodies in [otic ganglion]
4) Postganglionic fibers reach the gland via [Auriculotemporal n.]
- *SUBMANDIBULAR & SUBLINGUAL GLANDS**
1) Describe its nerve innervation
2) Where are its Preganglionic fibers located?
3) Where are its POSTganglionic cell bodies located?
1) parasympathetic innervation from [Facial CN7]
2) Preganglionic fibers in [chorda tympani n.] which travels with the CN5/lingual n.
3) Postganglionic cell bodies in [submandibular ganglion]
A: What part of the face does the Facial artery perfuse?
B: Name the 4 parts of the Facial Artery
A: ANT face including lips & nose
B: 1-inferior labial 2-superior labial 3-lateral nasal 4- angular artery = special
What’s special about the angular artery daughter of the ______ ______
angular artery <——–FACIAL ARTERY
**aa is the terminal branch tht anastomses w/infraorbital & ophthalmic arteries
1) The Maxillary artery has 3 parts. What are they, where are they located and how many branches each?
2) What fossa is the Maxillary artery found and perfuses?
1)
* Mandibular part [4 branches]=behind mandible neck
- Pterygoid part [4 branches] = found inside infratemporal fossa
- Pterygopalatine part [4 branches] = found inside pterygopalatine fossa & terminates in infraorbital region
2) Maxillary found in/perfuses infratemporal fossa
List the 4 arteries of the [Maxillary a. PTERYGOID part]
- pterygoid a.
- deep temporal a.
- masseteric a.
- buccal a.
A: List the 4 arteries of the [Maxillary a. PTERYGOPALATINE part]
B: Where is this part of the Maxillary a. located?
- POST SUP alveloar
- infraorbital a.
- descending palatine a.
- sphenopalatine a.
B: in the pterygopalatine fossa and terminates in infraorbital region
1) Why are some facial VEINS potential routes of infection?
2) What is an example of some of these veins?
1) many facial veins are continuous w/dural sinuses by valveless channels
2) emissary v. & [SUP ophthalmic v. ]
Describe the Lymphatic Flow within nodes [3]
starts at superficial regional nodes—>dEEP Cervical Nodes
———> THORACIC or RIGHT LYMPHATIC DUCT
A: What are the 6 REGIONAL lymph nodes in order from Back to FRONT? What drains into these?
B: What are the 2 DEEP lymph nodes? Locations?
A: OMPSSS = Regional lymph nodes
1) Occipital
2) Mastoid POST auricular
3) Parotid preauricular
4) superficial cervical
5) SubMandibular
6) Submental
- ———————————————————————
B: DEEP =
ºjugulodigastric (upper deep cervical)
ºJugulo-Omohyoid (LoWer Deep Cervical)
List the MAIN Function for each of these Facial expression Muscles
- Orbicularis oculi ORBITAL
- Orbicularis oculi PALPEBRAL
- Frontal Belly Occipitofrontalis
- Occipital Belly Occipitofrontalis
- Buccinator
- Mentalis m.
- Orbicularis oris m.
- OoO= Squints eyes
- OoP= Blinking
- FBO “Frowning” muscle & elevates eyebrow
- OBO= Elevates eyebrow from bck
- Buccinator= CONTROLS FOOD with tongue’s help stopping it from falling into vestibule space
- Mentalis m.= Protrusion/Elevation of lower lip & chin skin
- Oom= Kissing, Puckering/Lip Protrusion
[Temporalis Muscle ]
A: Attachments
B: Action [2]
C: Nerve Innervation
D: Perfusion
[Temporalis muscle]
A: Fossa temporalis & mandible Coronoid process
B: Mandible Elevation;Chewing
C: ANT and POST branch of Deep Temporal n.
D: Deep Temporal a.
HUGE MUSCLE ON THE SIDE
[Masseter m.]
A: Attachments
B: Action [3]
C: Nerve Innervation
D: Perfusion
[Masseter]
A: Zygomatic bone and [angle of mandible]
B: Mandible Elevation, Adduction & Protrusion
C: Masseteric n.
D: Masseteric artery
[Lateral Pterygoid m.]
A: Attachments
B: Action
C: Nerve Innervation
D: Perfusion
BOTH PTERYGOID muscles are located in the _____space
[Lateral Pterygoid m.]
A: [Greater wing Sphenoid] and TMJ
B: Opens Jaw/Mandible PROtraction
C: Lateral pterygoid n.
D: [Maxillary a.>Pterygoid branches]
[BOTH PTERYGOID MUSCLES ARE IN THE [DEEP HEAD INFRATEMPORAL SPACE]
[MEDIAL Pterygoid m.]
A: Attachments
B: Action
C: Nerve Innervation
D: Perfusion
BOTH PTERYGOID muscles are located in the _____space
“Medial is closer to the teeth”
A: Maxilla & Mandible RAMUS
B: SAME as TEMPORALIS= Mandible Elevation;Chewing
C: Medial pterygoid n.
D: [Maxillary a.>Pterygoid branches]
BOTH PTERYGOID MUSCLES ARE IN THE [DEEP HEAD INFRATEMPORAL SPACE]
What are the 4 MASTICATION muscle groups ?
TMLM
- Temporalis
- MASSETER
- Lateral Pterygoid
- Medial Pterygoid
1) Which artery runs with the Auricular temporal n. in the body ?
2) What Parent Artery does this artery come from?
3) What Parent nerve does the Auricular temporal n. come from?
1) Superficial temporal a. RUNS with the Auricular temporal n.
2) Superficial temporal a.<——- mandibular n.
[Trigeminal/CN5-B3^mandibular]
A: Which Artery would you find cutting inbetween the 2 Masseter muscles?
B: What 2 nerve branches are found anteriorly gliding across on top the superficial Masseter m.?
A: Transverse Facial Artery
B: Facial CN7 Buccal{bottom} AND Zygomatic Branches
Describe These SPHENOID Bone structures:
1: Foramen Spinosum
2: Foramen Rotundum
3: Foramen Ovale [2]
1: transmits middle meningeal a.[from Maxillary a. Parent] to brain
- ——————————————————————————–
2: Rotundum = transmits [Trigeminal/CN5-B2^Maxillary] AKA V2
- ——————————————————————————–
3: Ovale= transmits [Trigeminal/CN5-B3^mandibular] AKA V3 AND emissary veins
Facial CN7 mandibular n. is _____[MOTOR/sensor] while [Trigeminal/CN5-B3^mandibular n.] is _____[MOTOR/Sensor]
Facial CN7 mandibular n. = MOTOR ONLY!
[Trigeminal/CN5-B3^mandibular]=MOTOR AND SENSOR :-)
1) In the [Deep head infratemporal space] which 2 nerves should you expect to find right next to each other?
2) Which Parent n. does these both stem from?
Lingual n. [More on Top]
and
inferior alveolar n. [under lingual]
2) BOTH stem from [Trigeminal/CN5-B3^mandibular]
What does V3 mean
V3 = [Trigeminal/CN5-B3^manibular n.]
- Where does the [n. to mylohyoid] come from? [4]
2. Which muscles does this n. innervate?
[Trigeminal/CN5]—>B3^mandibular —-> [inf. alveolar n.]
——-(finally gives)—-> [n. to mylohyoid]
=travels to/innervates mylohyoid which is right above [ANT belly digastric] so this is innervated too!
Pterion
VULNERABLE JUNCTION made of [greater wing sphenoid] + [squamous temporal] + frontal + parietal Bone —>houses which perfuses brain dura mater!
1) The [middle meningeal artery] PIERCES or is very close to the _______ n.
2) What is the Parent Artery of the [middle meningeal artery]?
3) Which foramen does this artery transmit thru AFTER it pierces the ____n.
4)The _____n. pierced by [middle meningeal a.] itself Travels with the ____ _____ artery, which is a daughter artery of the External Carotid Artery
1) [middle meningeal artery] PIERCES/very close to the AURICULOTEMPORAL n.
2) Maxillary Artery —–> [middle meningeal a.]
3) After piercing AURICULOTEMPORAL N., [middle meningeal a.] transmits thru FORAMEN SPINOSUM
4) AURICULOTEMPORAL n. after being pierced runs course with the SUPERFICIAL TEMPORAL ARTERY (daughter of External Carotid Artery)
